CVE-2025-66374
📋 TL;DR
This vulnerability in CyberArk Endpoint Privilege Manager Agent allows a local user to escalate privileges by exploiting policy elevation of an Administration task. It affects organizations using CyberArk EPM Agent versions through 25.10.0. Attackers with local access can gain elevated privileges on affected endpoints.
💻 Affected Systems
- CyberArk Endpoint Privilege Manager Agent
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with local access gains full administrative control over the endpoint, potentially compromising the entire endpoint privilege management system and accessing sensitive credentials.
Likely Case
Malicious insider or compromised user account escalates privileges to bypass security controls, install malware, or access restricted resources.
If Mitigated
With proper access controls and monitoring, impact is limited to isolated endpoints with quick detection and remediation.
🎯 Exploit Status
Requires local user access but appears to be straightforward exploitation based on the description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 25.12.0 or later
Vendor Advisory: https://docs.cyberark.com/epm/latest/en/content/release%20notes/rn-whatsnew25-12.htm#Security
Restart Required: Yes
Instructions:
1. Download CyberArk EPM Agent version 25.12.0 or later from CyberArk portal. 2. Deploy the update through your endpoint management system. 3. Restart affected endpoints to complete installation.
🔧 Temporary Workarounds
Restrict local user privileges
allLimit local user account privileges to reduce attack surface
Enhanced monitoring of Administration tasks
allIncrease logging and monitoring of privilege elevation events
🧯 If You Can't Patch
- Implement strict least privilege access controls for all user accounts
- Deploy enhanced endpoint detection and response (EDR) solutions to monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check CyberArk EPM Agent version on endpoints - if version is 25.10.0 or earlier, system is vulnerable.Check Version:
On Windows: Check CyberArk EPM Agent version in Control Panel > Programs and Features. On Linux: Check package version via package manager.Verify Fix Applied:
Verify CyberArk EPM Agent version is 25.12.0 or later after patch deployment.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Administration task execution by non-admin users
- Failed privilege elevation attempts
Network Indicators:
- Unusual outbound connections from endpoints after privilege escalation
SIEM Query:
source="CyberArk EPM" AND (event_type="privilege_escalation" OR task="Administration")